As he pondered, the captain gained the sudden impression that someone had come beside him.

As it shut, Cliff gained a sudden impression of a face that had peered from within.

Then the detective gained a sudden impression that some one was close by.

I had a sudden impression of falling into an abyss.

Then he had a sudden impression that all the world had turned blue.

He had the sudden impression that she was more obsessed with this thing than she ought to be.

Ferret got the sudden impression he was only catching part of the conversation.

Hothan dropped back as the heat of the flame made a sudden impression upon him.

The old man smiled and I had a sudden surging impression of the wisdom in that quiet mind.

In a flash the speaker's heir had a sudden, clear impression of his twin brother.